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🔌 串联电阻Resistors in Series Calculator
串联总电阻 R = R₁ + R₂ + …；填写电源电压时同时给出电流和每个电阻上的分压与功率。本地处理。Total series resistance R = R1 + R2 + ...; with a supply voltage, also the current and each resistor's voltage drop and power. Processed locally.
使用说明与常见问题How-to & FAQ
「串联电阻」是什么？What is the Resistors in Series Calculator tool?
串联总电阻 R = R₁ + R₂ + …；填写电源电压时同时给出电流和每个电阻上的分压与功率。本地处理。Total series resistance R = R1 + R2 + ...; with a supply voltage, also the current and each resistor's voltage drop and power. Processed locally.
如何使用「串联电阻」？How do I use the Resistors in Series Calculator tool?
填写各个电阻值（用空格或逗号分隔），即可得到串联总电阻；填写电源电压时还会给出电流以及每个电阻的电压和功率。结果会随输入实时更新。Enter the resistances separated by spaces or commas to get the total series resistance; add the supply voltage to get the current and each resistor's voltage drop and power. The result updates as you type.
并联？Parallel?
并联总电阻为 1/R = 1/R₁ + 1/R₂ + …，总是小于最小的那个。In parallel 1/R = 1/R₁ + 1/R₂ + …, always below the smallest.
能举个计算实例吗？Can you show a worked example?
例如在「串联电阻」中填 电阻值 Ω（空格或逗号分隔） = 100 220 330，结果区显示：总电阻：650 ΩFor example, entering Resistances Ω (space or comma separated) = 100 220 330 in the Resistors in Series Calculator gives: Total resistance: 650 Ω
哪些输入会被检查？Which inputs are validated?
「串联电阻」会检查这些输入——「电源电压 V（可选）」：不能为负数；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Resistors in Series Calculator checks its inputs — "Supply voltage V (optional)": cannot be negative; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.
有哪些选项可以调整？What options can I adjust?
「串联电阻」的设置：「电阻值 Ω（空格或逗号分隔）」默认 100 220 330；「电源电压 V（可选）」可留空。每次生成结果都按当前设置处理。Settings in the Resistors in Series Calculator — "Resistances Ω (space or comma separated)" default 100 220 330; "Supply voltage V (optional)" optional. The result always uses the current settings.
计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?
「串联电阻」使用教科书标准公式（公式写在说明和常见问题中），适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Resistors in Series Calculator uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.
「串联电阻」免费吗？需要注册吗？Is the Resistors in Series Calculator free? Do I need an account?
「串联电阻」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Resistors in Series Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.